The abort command gives up existing configurations and exits the configuration template view.
<HUAWEI> system-view [~HUAWEI] command group g1 [~HUAWEI-group-g1] abort
<HUAWEI> system [~HUAWEI] xpl as-path-list as_path1 [~HUAWEI-xpl-as] regular 1_2_3_4, [~HUAWEI-xpl-as] abort [~HUAWEI]